氧化鋁陶瓷 Alumina Ceramics

項(xiàng)目 Items	單位 Unit	條件 Condition	指標(biāo)值 Value
體密度 Bulk Density	g/cm3		>=3.65
抗折強(qiáng)度 Break-Resistivity	Mpa		>280
線膨脹系數(shù) Linear Expansion	x10-6/K	20-500°C	6.3-7.3
線膨脹系數(shù) Linear Expansion		20-800°C	6.3-7.3
相對(duì)介電常數(shù) Dielectric Coefficient		1MHz,25°C	9-10
		1MHz,500°C	9-10
		10GHz,25°C	9-10
介質(zhì)損耗角正切值 Dielectric Loss tge	x10-4	1MHz,25°C	<4
		1MHz,500°C	30-40
		10GHz,25°C	<10
體電阻率 Resistivity	W·cm	25°C	>1013
		300°C	>1010
		500°C	>108
介電強(qiáng)度 Dielectric Breakdown	kV/mm		>20
耐腐蝕性能 Corrosion-Resistivity	mg/cm2	1:9HCl	<7.5
耐腐蝕性能 Corrosion-Resistivity		10%NaOH	<0.2